UNCONFORMITY OF BEDFORD AND BEREA FORMATIONS 657 



nificant in comparison with the channels and valleys whose exist- 

 ence is made known by the drill of the quarry-men. 



The deepest of these sand-filled depressions is that in which is 

 located the quarry of the Ohio Stone Company (Fig. 1). This 

 quarry is situated on the outskirts of South Amherst, Lorain 



Fig. i 



Horizontal and vertical scale line H-S = 400 feet. N = North. Line 



A -D = elevation of 600 feet above sea-level. B = Bedford shale. 5^ = Berea sand- 

 stone. G = glacial drift. O = 0hio quarry. M = Malone quarry. C = No. 6 quarry, 

 Cleveland Stone Co. 



County, Ohio. The pit has been sunk along the axis of an anti- 

 clinal fold which runs in a southwesterly direction. The anticline 

 plunges eastward with a. dip of 3 . The south flank of the fold in 

 the quarry has a dip of 6° to the southeast; the north side dips 7 

 northwest. The great thickness of the sandstone, 217 feet, is due 

 to the sand-filled channel of the eroded Bedford horizon. That 

 this is true is shown by drillings and the structure of the strata in 

 the vicinity. One hundred feet southwest of the edge of the quarry 

 on the same level as the top of the quarry pit, the drill went 60 

 feet thorugh glacial drift and came upon Bedford shale without 

 encountering any sandstone, and yet the strata in the pit were 

 dipping in that general direction. In the quarry 217 feet of sand- 

 stone were passed through before striking Bedford shale. Four 

 hundred feet on the horizontal from the north side of the quarry 

 the strata dip toward the southeast. One thousand feet on the 

 horizontal from this north side of the Ohio quarry, and on the same 

 level as the top of the quarry, another quarry, the Malone, has 

 gone down 100 feet through massive sandstone to the Bedford shale. 

 Here the strata still dip to the southeast; the dip is 7 . Thus a 

 small syncline lies between these two quarries. The dips of the 

 strata are not great enough to carry the sandstone to the depth 

 reached in the Ohio quarry even though the syncline did not exist. 



